Dental restoration producing system for producing dental restoration from dental mill blank with through-hole, operation system of the system, program for the system, and dental mill blank for use in the system

Abstract

A dental restoration producing system of producing a dental restoration from a dental mill blank with one or more through-holes according to one embodiment, when the dental restoration includes no through-hole of the dental restoration, the superposed data generating section generates a superposed data in which at least one through-hole of the dental mill blank is not superposed with the dental restoration, when the dental restoration includes a through-hole of the dental restoration, the superposed data generating section generates a superposed data in which at least one through-hole of the dental mill blank is not superposed with the dental restoration and the through-hole of the dental restoration, or a superposed data in which at least one through-hole of the dental mill blank is included in the through-hole of the dental restoration which is larger than the at least one through-hole of the dental mill blank.

What is claimed is: 
     
       1. A dental restoration producing system of producing a dental restoration from a dental mill blank with one or more through-holes, comprising;
 a data taking-in section taking in a dental mill blank shape data which indicates a shape of a dental mill blank and includes a position data of one or more through-holes, and a dental restoration shape data which indicates a shape of a dental restoration to be produced, 
 a superposed data generating section generating a superposed data in which the dental restoration is superposed in the dental mill blank based on the dental mill blank shape data and the dental restoration shape data, and 
 a control section controlling cutting of the dental mill blank based on the superposed data, wherein, 
 when the dental restoration includes no through-hole of the dental restoration, the superposed data generating section generates a superposed data in which at least one through-hole among the one or more through-holes of the dental mill blank is not superposed with the dental restoration, 
 when the dental restoration includes a through-hole of the dental restoration, the superposed data generating section generates a superposed data in which at least one through-hole among the one or more through-holes of the dental mill blank is not superposed with the dental restoration and the through-hole of the dental restoration, or a superposed data in which at least one through-hole among the one or more through-holes of the dental mill blank is included in the through-hole of the dental restoration which is larger than the at least one through-hole among the one or more through-holes of the dental mill blank, and 
 the control section controls cutting so that cutting is started from the at least one through-hole among the one or more through-holes of the dental mill blank. 
 
     
     
       2. A dental mill blank with one or more through-holes used in the dental restoration producing system according to  claim 1 ,
 wherein the dental mill blank is in a columnar disk shape formed to have a dimension of 1 to 3 cm (height) by 6 to 15 cm (diameter) and having the through-hole at a position which includes the center of a circular face, or is in a quadratic prism disk shape formed to have a dimension of 1 to 3 cm (height) by 6 to 15 cm (one side) by 6 to 15 cm (one side) and having the through-hole at a position which includes the center of a rectangular face having the dimension of 6 to 15 cm (one side) by 6 to 15 cm (one side). 
 
     
     
       3. A dental mill blank with one or more through-holes used in the dental restoration producing system according to  claim 1 ,
 wherein the dental mill blank is in a columnar block shape formed to have a dimension of 1 to 2 cm (one side) by 1 to 2 cm (one side) by 1 to 6 cm (height) and having the through-hole at a position spaced from one end of in the longitudinal direction by a distance of 1 to 10% of the dimension in the longitudinal direction, or is in a columnar block shape formed to have a dimension of 1 to 6 cm (height) by 1 to 2 cm (diameter) and having the through-hole at a position spaced from one end of in the height direction by a distance of 1 to 10% of the dimension in the height direction. 
 
     
     
       4. A computer-implemented operation method of a dental restoration producing system for producing a dental restoration from a dental mill blank with one or more through-holes, comprising;
 a data taking-in step of taking in a dental mill blank shape data which indicates a shape of a dental mill blank and includes a position data of one or more through-holes, and a dental restoration shape data which indicates a shape of a dental restoration to be produced, 
 a superposed data generating step of generating a superposed data in which the dental restoration is superposed in the dental mill blank based on the dental mill blank shape data and the dental restoration shape data, and 
 a cutting step of cutting of the dental mill blank based on the superposed data, wherein, 
 when the dental restoration includes no through-hole of the dental restoration, in the superposed data generating step, a superposed data in which at least one through-hole among the one or more through-holes of the dental mill blank is not superposed with the dental restoration is generated, 
 when the dental restoration includes a through-hole of the dental restoration, in the superposed data generating step, a superposed data in which at least one through-hole among the one or more through-holes of the dental mill blank is not superposed with the dental restoration and the through-hole of the dental restoration, or a superposed data in which at least one through-hole among the one or more through-holes of the dental mill blank is included in the through-hole of the dental restoration which is larger than the at least one through-hole among the one or more through-holes of the dental mill blank, is generated, and 
 the cutting is started from the at least one through-hole among the one or more through-holes of the dental mill blank in the cutting step. 
 
     
     
       5. A non-transitory computer-readable storage medium storing a dental restoration producing program, when executed, causing one or more computers to:
 a data taking-in section taking in a dental mill blank shape data which indicates a shape of a dental mill blank and includes a position data of one or more through-holes, and a dental restoration shape data which indicates a shape of a dental restoration to be produced, 
 a superposed data generating section generating a superposed data in which the dental restoration is superposed in the dental mill blank based on the dental mill blank shape data and the dental restoration shape data, and 
 a control section controlling cutting of the dental mill blank based on the superposed data, wherein, 
 when the dental restoration includes no through-hole of the dental restoration, the superposed data generating section generates a superposed data in which at least one through-hole among the one or more through-holes of the dental mill blank is not superposed with the dental restoration, 
 when the dental restoration includes a through-hole of the dental restoration, the superposed data generating section generates a superposed data in which at least one through-hole among the one or more through-holes of the dental mill blank is not superposed with the dental restoration and the through-hole of the dental restoration, or a superposed data in which at least one through-hole among the one or more through-holes of the dental mill blank is included in the through-hole of the dental restoration which is larger than the at least one through-hole among the one or more through-holes of the dental mill blank, and 
 the control section controls cutting so that cutting is started from the at least one through-hole among the one or more through-holes of the dental mill blank.